| NATIONAL FISH AND WILDLIFE FOUNDATION | 521384139 | 2017-09-30 | $647K | Various Conserv Proj |
| NATIONAL FISH AND WILDLIFE FOUNDATION | 521384139 | 2023-09-30 | $459K | CONSERVATION PROJECTS |
| NATIONAL FISH AND WILDLIFE FOUNDATION | 521384139 | 2025-09-30 | $434K | BROOK TROUT HABITAT IN THE PIGEON RIVER MI |
| NATIONAL FISH AND WILDLIFE FOUNDATION | 521384139 | 2024-09-30 | $433K | BROOK TROUT HABITAT IN THE PIGEON RIVER MI |
| NATIONAL FISH AND WILDLIFE FOUNDATION | 521384139 | 2018-09-30 | $416K | Various Conservation Proj |
| NATURE CONSERVANCY | 530242652 | 2023-06-30 | $400K | CONSERVATION ACTIVITIES |
| NATIONAL FISH AND WILDLIFE FOUNDATION | 521384139 | 2016-09-30 | $362K | Var Convserv Proj |
| NATIONAL FISH AND WILDLIFE FOUNDATION | 521384139 | 2016-09-30 | $340K | Var Convserv Proj |
| NATIONAL FISH AND WILDLIFE FOUNDATION | 521384139 | 2019-09-30 | $339K | Various Conservation Proj |
| GREAT LAKES FISHERY TRUST INC | 383331471 | 2019-12-31 | $155K | RESEARCH |
| GREAT LAKES FISHERY TRUST INC | 383331471 | 2022-12-31 | $100K | — |
| GREAT LAKES FISHERY TRUST INC | 383331471 | 2016-12-31 | $98K | RESEARCH |
| GREAT LAKES FISHERY TRUST INC | 383331471 | 2016-12-31 | $90K | RESEARCH |
| BAY AREA COMMUNITY FOUNDATION | 382418086 | 2019-12-31 | $75K | LAKE HURON ACTION AGENDA |
| AMERICAN ENDOWMENT FOUNDATION | 341747398 | 2023-12-31 | $50K | ENVIRONMENTAL |
| GREAT LAKES FISHERY TRUST INC | 383331471 | 2018-12-31 | $40K | RESEARCH |
| GREAT LAKES FISHERY TRUST INC | 383331471 | 2016-12-31 | $35K | RESEARCH |
| THE CONSERVATION FUND A NONPROFIT CORPORATION | 521388917 | 2025-12-31 | $31K | CONSERVATION OF NATURAL RESOURCES, SUSTAINABLE ECONOMIC & COMMUNITY DEVELOPMENT |
| THE CONSERVATION FUND A NONPROFIT CORPORATION | 521388917 | 2023-12-31 | $31K | CONSERVATION OF NATURAL RESOURCES;SUSTAINABLE ECONOMIC & COMMUNITY DEVELOPMENT |
| OTSEGO COMMUNITY FOUNDATION | 383216235 | 2023-12-31 | $30K | COMMUNITY TREE PLANTING PROJECT |
| BAY AREA COMMUNITY FOUNDATION | 382418086 | 2018-12-31 | $25K | WATER INITIATIVE PROJECT TO BENEFIT LAKE HURON |
| NATURE CONSERVANCY | 530242652 | 2022-06-30 | $25K | CONSERVATION ACTIVITIES |
| THE CONSERVATION FUND A NONPROFIT CORPORATION | 521388917 | 2022-12-31 | $21K | CONSERVATION OF NATURAL RESOURCES;SUSTAINABLE ECONOMIC & COMMUNITY DEVELOPMENT |
| FIDELITY INVESTMENTS CHARITABLE GIFT FUND | 110303001 | 2022-06-30 | $13K | For grant recipient's exempt purposes |
| TOLEDO COMMUNITY FOUNDATION | 237284004 | 2017-12-31 | $10K | TROUT HABITAT RESTORATION PROJECT (AUSABLE RIVER) |
| CLIMATE CONSERVATION | 271226829 | 2023-06-30 | $10K | BUILDING NETWORKS |
| BAY AREA COMMUNITY FOUNDATION | 382418086 | 2023-12-31 | $10K | LAKE HURON FOREVER CONTRACT FOR SERVICES REQUEST, LAKE HURON FOREVER COMMUNITY PROJECTS |
| THE CHICAGO COMMUNITY TRUST | 362167000 | 2022-09-30 | $7K | General operating support |
| RIVER NETWORK | 930969979 | 2022-09-30 | $7K | RIVER CONSERVATION |
| THE CHICAGO COMMUNITY TRUST | 362167000 | 2025-09-30 | $6K | General support for programs, operations and other charitable purposes |